#-------------------------------------------------------------
#
# (C) Copyright IBM Corp. 2010, 2015
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#     http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
#
#-------------------------------------------------------------


args <- commandArgs(TRUE)
options(digits=22)

library("Matrix")

V <- readMM(paste(args[1], "V.mtx", sep=""))
n <- ncol(V); 

R <- array(0,dim=c(n,1))

for( i in 1:n )
{
   X <- V[2:nrow(V),i];                 
   R[i,1] <- sum(X %*% t(X));
}   

writeMM(as(R, "CsparseMatrix"), paste(args[2], "Rout", sep="")); 